JPH01225517A - Manufacture of laminate - Google Patents

Abstract

PURPOSE:To prevent defective molding of laminates by using a metal plate of given thickness when laminated material constituted of a resin impregnated base material and metallic foils is laminate molded by using metal plates, a cushioning material and a carrier plate. CONSTITUTION:Phenol resin, epoxy resin, fluorine resin or the like is used alone or used in the form of a mixture or the like as the resin for a resin impregnated base material, and woven cloth constituted of inorganic fibers, synthetic fibers and natural fibers, non-woven cloth or paper, or else combination of said materials is used as the base material, while copper, aluminum or the like is used for metallic foils. Iron, aluminum, copper or the like is used alone, as alloy or a composite product as a metal plate having a thickness of four times more of thickness unevenness of a cushioning material. An elastic material such as rubber, synthetic resin, paper, cloth, a plate or the like is used for the cushioning material. A plurality of units of laminates constituted of resin impregnated base materials and metallic foils are inserted between metal plates and overlapped, outside of which a carrier plate is provided through a cushioning material. The thickness unevenness of the cushioning material can be absorbed by the metallic plates by inserting the whole of said material units between platens and pressurizing and heating to prevent the laminates from getting uneven pressure and temperature.

Description

[Detailed Description of the Invention] [Field of Industrial Application] What is the present invention? ! The present invention relates to a method of manufacturing electrical laminates used for electrical equipment, computing equipment, communication equipment, etc.

[Conventional technology]

Conventionally, electrical laminates have been made by laminating a laminate consisting of a resin-impregnated base material and metal foil sandwiched between metal plates, which is layered one or more times, with a carrier plate placed on the outside via a cushioning material, and then sandwiched between hot plates. Although paper, resin board, resin-impregnated paper cloth, etc. were used as the silica material, the thickness was uneven in the range of 5 to 2G96.

[Problem that the invention seeks to solve]

As described in the conventional technology, when paper, resin board, resin-impregnated paper cloth, etc. are used as the shoelace material, V-run properties are good, but due to uneven thickness, uneven pressure and temperature on the laminate occur, and the lamination Molding defects such as scratches occur on the plate. The present invention has been made in view of the above-mentioned problems in the prior art, and an object of the present invention is to provide a method of manufacturing an electrical laminate without forming defects.

[Means for solving problems]

In the present invention, when a laminated body consisting of a resin-impregnated base material and metal foil is laminated and molded using a metal V-det, a cut-off material, and a carrier plate, a metal having a thickness that is four times or more than the thickness unevenness of the Kufu VW material is used. Since the manufacturing method of the laminate is characterized by using plates, the causes of defects caused by Cranlan material are absorbed by the metal plates, and molding defects can be eliminated.The present invention will be described in detail below. explain.

Examples of resins for the resin-impregnated base material used in the present invention include phenolic resin, cresol resin, epoxy resin, unsaturated polyester resin, mefmin resin, polyimide, polybutadiene, polyamide, polyamideimide, polysulfone,
Polyphenylene sulfide, polyphenylene oxide, polybutylene terephthalate, polyether ether ketone, fluorinated resin, etc. alone, modified products, mixtures, etc. are used, and if necessary, R6 such as water, methyl alcohol, acetone, cyclohexanone, styrene, etc. is used to adjust the viscosity. The base material is woven fabric, non-woven fabric, mat, or paper made of inorganic fibers such as glass and asbestos, organic synthetic fibers such as polyester, polyamide, polyvinyl alcohol, and acrylic, and natural fibers such as cotton. Or a combination base material etc. of these. Metal foils include copper, aluminum, iron,
It can be made of nickel, zinc, etc. alone, an alloy, or a composite product, and if necessary, the adhesive surface is chemically and/or physically treated, and an adhesive layer is further provided if necessary. The metal plate may be made of iron, aluminum, copper, nickel, etc. alone, alloy, or composite with a thickness of 1 to 10 W. If necessary, a release layer may be provided on the surface, but the thickness of the material may be uneven. It is necessary that the thickness is four times or more.

The rubber material may be any elastic material such as rubber, synthetic resin, paper, cloth, board, plywood, or resin-impregnated paper cloth, and preferably has a thickness of 1 to 10 mm. As for the carrier plate, a normal one can be used as is.

The present invention will be explained below based on examples.

Example 1 100 parts by weight of epoxy resin (manufactured by Shell Chemical Co., Ltd., product name: Epicoat 10013) was applied to a 0.2N thick lath cloth.
(hereinafter simply referred to as parts), 4 parts of dicyandiamide, benzene~
Dimethylamine 0.2 parts, methyl oxide -/l'10
After drying the epoxy resin face consisting of 0 parts, the resin amount is ω
Resin gold obtained by impregnating and drying so that weight % (hereinafter simply written as %) and 7 base materials with a thickness of 0.035
Ten sets of laminates each having copper foil of EW sandwiched between 51nl thick stainless steel metal plates were stacked on the outside with uneven thickness IRH through a 10fl thick Khufuft paper Tsushin material. After placing a 5n thick iron carrier plate, it was sandwiched between hot platens, and the molding pressure was 40 kg/cd, 165
Laminated and molded at ℃ for 120 minutes to make 10 sheets with a thickness of 1.6jFl
A double-sided steel clad laminate was obtained.

Example 2 A double-sided steel-clad laminate was obtained in the same manner as in Example 1, except that a 2U fluororesin-impregnated cloth with a thickness unevenness of 0.6fl was used as the cushioning material, and the metal plate thickness was 4n.

Comparative example! Thickness 1 oarat with thickness unevenness of 181 as Kutsushiron material
A double-sided steel-clad laminate was obtained in the same manner as in Example 1, except that the kraft paper and carbon material was used and the thickness of the metal plate was 3 all 1 g.

Comparative Example 2 A double-sided copper-clad laminate was obtained in the same manner as in Example 1, except that a fluororesin-impregnated cloth with a thickness unevenness of 0.6 B and a thickness of 2n was used as the shoelace material, and the metal plate thickness was changed to 2n. .

Table 1 shows the molding defect occurrence rates of the laminates of Examples 1 and 2 and Comparative Examples 1 and 2.

Table 1 [Effects of the Invention] The present invention is constructed as described above. The method for manufacturing a laminate having the configuration described in claim 1 has the effect of significantly reducing the molding defect rate of the laminate.

Claims (1)

[Claims] (1) When forming a laminate consisting of a resin-impregnated base material and metal foil using a metal plate, cushioning material, and carrier plate, a metal plate having a thickness four times or more than the thickness unevenness of the cushioning material is used. A method for manufacturing a laminate.